how to reduce font size in simple pr | lpr pipeline?

[Robert P. J. Day]

  ubuntu 12.04, connected to samsung scx-4826fn multifunction printer,
and i can print simple text files just fine with:

  $ pr -o5 <file> | lpr

but i'd like to reduce the font size of the output.  what's the
simplest way to do that?

rday

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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